Russian gold coins are very interesting and I also treated myself to a specimen.
The Tscherwonez from 1976.
Originally western gold coins were called Tscherwonez (червонец) in the Russian Empire. After the October Revolution and the failure of the transitional currency Sowsnak, a Russian gold coin with this designation was minted for the first time in 1923. It bore the name and coat of arms of the Russian SFSR and not of the newly founded Soviet Union. Its rough weight was 8.60260 grams with a fine content of 900/1000 (fine weight 7.74234 grams - just under 1/4 ounce) and its value corresponded to ten rubles. This gold coin was minted in 1923 and later again between 1975 and 1982. In 1925 also a Tscherwonez was minted, but currently only one of them is known.
Greetings from Maxe
Translated with www.DeepL.com/Translator